30 ton line vvvf locomotive was carefully research the company
after many years of practice, successfully developed, its good
design, is a practical product, advanced technology, innovative
design, the locomotive driver's comfort, safety and reliability,
energy efficiency is an ideal product.

JY30/9G (p) frame line type electric locomotive used international
advanced of VVVF Exchange frequency transformer adjustable speed
technology, will frame line of DC electric through high-power IGBT
components inverse becomes frequency can adjustable of three-phase
Exchange electric, drive three-phase motor as locomotive power, due
to used has VVVF control technology, makes three-phase motor
reached and over DC motor of up moving turned moments and traction
characteristics, makes locomotive with overload up moving strong
powerful. It compared with a conventional DC locomotive, damage
control of AC motor, controller, no contacts and no wear, and
braking the mechanical energy into electrical energy to give back.